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Título

Study of e(+)e(-) -> p(p)over-bar via initial-state radiation at BABAR

AutorBabar Collaboration; Lees, J. P.; Martínez-Vidal, Fernando ; Oyanguren, Arantza ; Villanueva-Pérez, P.
Palabras claveTime-Like Region
Electromagnectic Form-Factors
Fecha de publicación10-may-2013
EditorAmerican Physical Society
CitaciónPhysical Review - Section D - Particles and Fields 87 (9): 092005 - 18(2013)
ResumenThe process e(+)e(-) -> p (p) over bar gamma is studied using 469 fb(-1) of integrated luminosity collected with the BABAR detector at the SLAC National Accelerator Laboratory, at an e(+)e(-) center-of-mass energy of 10.6 GeV. From the analysis of the p (p) over bar invariant mass spectrum, the energy dependence of the cross section for e(+)e(-) -> p (p) over bar is measured from threshold to 4.5 GeV. The energy dependence of the ratio of electric and magnetic form factors, vertical bar G(E)/G(M)vertical bar, and the asymmetry in the proton angular distribution are measured for p (p) over bar masses below 3 GeV. We also measure the branching fractions for the decays J/psi -> p (p) over bar and psi(2S) -> p (p) over bar are also determined.
Versión del editorhttp://dx.doi.org/10.1103/PhysRevD.87.092005
URIhttp://hdl.handle.net/10261/126191
DOI10.1103/PhysRevD.87.092005
ISSN1550-7998
E-ISSN1550-2368
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